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