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