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