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