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