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)(35,40)(36,41)(37,42)(38,39)(43,45)(44,48)(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)(34,39)(36,40)(42,47)(44,45)(2,3)(7,9)(8,10)(14,15)(18,24)(20,23)(25,32)(28,31)(33,35,38,41)(34,40,39,36)(37,43,46,48)(42,45,47,44)(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)(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)(33,36,38,40)(34,41,39,35)(37,45,46,44)(42,43,47,48)(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)(33,37)(34,42)(35,43)(36,44)(38,46)(39,47)(40,45)(41,48) 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.