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