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)(19,21)(20,25)(22,32)(23,26)(24,29)(27,31)(28,30)(36,44)(40,45)(42,48)(46,47) involution — undirected(3,9)(7,13)(10,15)(14,16)(17,19)(18,24)(20,27)(21,26)(22,28)(23,29)(25,30)(31,32)(34,38)(39,41)(40,45)(46,47) involution — undirected(2,6)(7,13)(8,11)(14,16)(17,20,23,22)(18,25,26,32)(19,27,29,28)(21,31,24,30)(33,34,37,38)(35,41,43,39)(36,40,44,45)(42,47,48,46)(1,3)(2,7)(4,10)(5,9)(6,13)(8,14)(11,16)(12,15)(17,19)(18,24)(20,27)(21,26)(22,28)(23,29)(25,30)(31,32) involution — undirected(1,2)(3,7)(4,8)(5,6)(9,13)(10,14)(11,12)(15,16)(17,21,23,24)(18,19,26,29)(20,30,22,31)(25,28,32,27)(33,35,37,43)(34,39,38,41)(36,42,44,48)(40,46,45,47)(1,4)(2,8)(3,10)(5,12)(6,11)(7,14)(9,15)(13,16)(17,22,23,20)(18,25,26,32)(19,28,29,27)(21,31,24,30)(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.