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