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