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