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