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