One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,11)(5,6)(8,12)(9,13)(10,16)(14,15)(17,18)(19,27)(20,26)(21,24)(22,30)(23,25)(28,29)(31,32)(33,34)(35,40)(36,45)(37,42)(38,46)(39,41)(43,48)(44,47) involution — undirected(3,9)(7,13)(10,15)(14,16)(17,19,23,21)(18,24,25,27)(20,28,30,31)(22,29,26,32)(33,35)(34,40)(36,37)(38,44)(39,43)(41,48)(42,45)(46,47)(2,6)(7,13)(8,11)(14,16)(18,25)(20,30)(24,27)(28,31)(34,41)(35,43)(36,46)(42,44) involution — undirected(1,2)(3,7)(4,8)(5,6)(9,13)(10,14)(11,12)(15,16)(17,20)(18,26)(19,28)(21,31)(22,25)(23,30)(24,32)(27,29)(33,36)(34,38)(35,37)(39,46)(40,44)(41,45)(42,48)(43,47) involution — undirected(1,3)(2,7)(4,10)(5,9)(6,13)(8,14)(11,16)(12,15)(17,21,23,19)(18,24,25,27)(20,31,30,28)(22,29,26,32)(33,37)(34,42)(35,36)(38,48)(39,47)(40,45)(41,44)(43,46)(1,4)(2,8)(3,10)(5,12)(6,11)(7,14)(9,15)(13,16)(17,22,23,26)(18,20,25,30)(19,29,21,32)(24,28,27,31)(33,38)(34,36)(35,44)(37,40)(39,45)(41,46)(42,43)(47,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.