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