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