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