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