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