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