One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,10)(4,13)(5,8)(6,14)(7,9)(11,12)(15,16)(17,18,21,24)(19,25,27,22)(20,23,28,30)(26,31,32,29)(36,44)(40,47)(42,48)(45,46)(1,3,7,5)(2,8,9,10)(4,11,14,15)(6,12,13,16)(17,19,21,27)(18,22,24,25)(20,26,28,32)(23,29,30,31)(33,34)(35,39)(36,40)(37,41)(38,43)(42,46)(44,47)(45,48)(17,19)(18,22)(20,26)(21,27)(23,29)(24,25)(28,32)(30,31)(33,35)(34,38)(36,42)(37,43)(39,41)(40,45)(44,48)(46,47) involution — undirected(1,4)(2,6)(3,11)(5,15)(7,14)(8,12)(9,13)(10,16)(17,19)(18,22)(20,26)(21,27)(23,29)(24,25)(28,32)(30,31)(33,35)(34,39)(36,42)(37,43)(38,41)(40,46)(44,48)(45,47) involution — undirected(1,5,7,3)(2,8,9,10)(4,11,14,15)(6,16,13,12)(17,18)(19,22)(20,23)(21,24)(25,27)(26,29)(28,30)(31,32)(33,34)(35,38)(36,40)(37,41)(39,43)(42,45)(44,47)(46,48)(1,6)(2,4)(3,12)(5,16)(7,13)(8,11)(9,14)(10,15)(17,20,21,28)(18,23,24,30)(19,26,27,32)(22,29,25,31)(33,36)(34,40)(35,42)(37,44)(38,45)(39,46)(41,47)(43,48)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.